Perhaps you should try some spelling variations:
thuoc cach » thuoc sach, thuc cach, truoc cach
cach thoi » cac thoi, cach thuc, cach noi
tran khoa » toan khoa, san khoa, nhan khoa
thoi tap » toi tap, hoc tap, thoi dai
cuu cong » cua cong, thu cong, cac cong
hoc tran » hoc tan, hoc tren, boc tran
khoa hoc » hoa hoc
nang dau » hang dau, xang dau, nang du
va nang » van nang, da nang, cam nang
hoc xa » hoc ma

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc cach thoi tap, nghien ((cuu cong) or (cuu mo)) hoc tran khoa hoc xa hoi va nang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc cach thoi tap, nghien ((cuu cong) OR (cuu mo)) hoc tran khoa hoc xa hoi va nang dau.
• Adding a wildcard symbol may retrieve word variants: thuoc cach thoi tap, nghien ((cuu cong) or (cuu mo)) hoc tran khoa hoc xa hoi va nang dau*.